Prime
- For users and administrators of Prime Computer equipment: 50-series (PRIMOS) and EXL series (Unix) mail to info-prime-request@blx-a.prime.com

Security
- To notify of unix security flaws BEFORE they become public knowledge, and to provide unix security enhancement programs and information. mail to security-request@cpd.com

Security Firewalls
- discuss the issues involved in setting up and maintaining such Internet security firewall systems. To subscribe, send a one line message "subscribe firewalls". mail to majordomo@GreatCircle.COM